MESON Chess Problem Database

Problem Display
PID: 253307 (8/8/8/1n6/8/R2Q4/bkPN4/3K4 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1910

(First published on Sat Oct 22 1910)

8/8/8/1n6/8/R2Q4/bkPN4/3K4

#2

5 + 3

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sc4#
      • 2.Qb3#
    • 1...Bb3
      • 2.Qxb3#
    • 1...Sxa3
      • 2.Qd4#
    • 1...Sc3+
      • 2.Qxc3#
    • 1...Sd4
      • 2.Qc3#
    • 1...Sd6
      • 2.Qc3#
    • 1...Sa7
      • 2.Qc3#
    • 1...Sc7
      • 2.Qc3#
  • Tries
    • 1.Qxb5+?
      • 1...Ka1
        • 2.Qb1#
        • 2.Qe5#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Kxa3!
    • 1.Qb3+?
      • 1...Ka1
        • 2.Rxa2#
        • 2.Qxa2#
        • 2.Qb1#
      • 1...Bxb3!
  • Keys
    • 1.c4!
      • 1...Bb3+
        • 2.Qxb3#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Ka1
        • 2.Qb1#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...Sxa3
        • 2.Qd4#
      • 1...Bb1
        • 2.Qb3#
      • 1...Sd4
        • 2.Qc3#
      • 1...Sd6
        • 2.Qc3#
      • 1...Sa7
        • 2.Qc3#
      • 1...Sc7
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,P_PINP(B)::QAR1(E),XB(a)
    • S(c);N_GUARD,SBLOCK,XR(D)::QAB(E)
    • S(c);CHECK,N_GUARD::QAB1(E),XS(c)
    • S(c);N_GUARD::QAB1(E)
  • Tries
    • Try
      • Q(E);CHECK,XS(c)
      • Vars
        • B(a);N_GUARD,P_PINP(B),P_SPINB(a)::QAR1(E),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • Q(E);CHECK
      • Refutation
        • B(a);P_PINP(B),XQ(E)
  • Actual
    • P(B);
    • Vars
      • B(a);CHECK,N_GUARD::QAR1(E),XB(a)
      • S(c);CHECK,N_GUARD::QAB1(E),XS(c)
      • K(b);N_GUARD,P_SPINB(a),S_FLIGHT::QAR1(E)
      • B(a);XP(B)::S(C),XB(a)
      • S(c);N_GUARD,SBLOCK,XR(D)::QAB(E)
      • B(a);N_GUARD::QAR1(E)
      • S(c);N_GUARD::QAB1(E)
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